Lock knife for looms



Aug. 23, 1932.

A. A. GORDON LOCK KNIFE FOR LOOMS Filed Jan. 25, 1931 J m m a. W m

m E Q r MM 3 W IMNIII u m 7 I R n 3 Y r 3 w a a m Am 2?! arrangement there is a likelihood. that. the

Patented Aug. 23, 1932 mnssaonosnrrs ALBERT A. GORDON, or woncnsrnn, /iessgorgps n rrs ss rein;1 'iio on o'il rro v e KN W E new tease. r (se a e e se es e s enres rise? .0 2. were LQQMSL A l cation f led Jan ary 2 3, 193;. seri l No. 510,741; 3

This invention. relates to.- improvements lock knives for so-called vihratorsof Knowles.

looms and it is the. general. objectf ofztheinknife by improved connections.

In the so-called Knowles. loom there areemployed. a seriesof vibrator levers which are raised or lowered: as. the case may he to. present vlbrator gears to, one. or another of a.-

p j f ppositelyrotating mutilated cylinder gears. The vibrator gears. which mesh with the lower cylinder have a tendency. to rise which is checked by a lock knife so controlled. as to prevent vertical movement of the .vi-,

brator lever during the tirne that the vibrator gear meshes with the cylind'eifs. As hereto: fore constructed these knives haveheenactuated by a cam actingthrough a series of con-M nections including a rocking shaft which is rotated by a force. transmitted through set. screws. The latter-transmit the rotative movement of a lever to a shaft: and because ofthis screws will work loose and thus destroy. the

proper timing of fthe knife'with resultant: breakage. It is an important object 0% my present invention to so arrange the connectionsbetween the cam and the lock knife that reliance for the transmission of operating: force need not depend on screws transmitting a torsional strain. To this end I providecoja operating parts which act to place the engaging parts of the connection in compression, this type or" strainhaving; no tendency to" destroy the proper setting o ftheparts a rotative direction. 7

It is another object of my invention to prode a pa r of direc ly gagi g members. one of whichis lock knife frame the other 3 of which is an actuating lever havin gg g meet lth an pera mg cam.

-With these and other objects. in ViQW' will appear as. the description pr.ocee ds,n1y

invention resides in the conibination ar ne men f erts naftei teeter 11 5 set forth in the claims.

In the. e eqmp y ne awing Where a convenient. embodiment. of;- my; intention 118' set forth,

pliedthereto, .i Fig. 2 is a detailed verticalrsection. online 2+2. ofi-Fig. 1 showing the lockknifeiranie;

and associated; parts, and; V r

Fig. E -i'sv a diagrammatic vieWqof the. ating-cam.

In the accompanying drawing" thejiloomr:

vibrator gears 13. The latter aremountedion vibrator. levers 14; which are. pivoted, around; a-heel pin. 15,; and are. positionedibyia.pattet i" mechanism designate d2 generally at 16.. 'l1ie latter movesin timed relation with the loom and acts to give the several. vibrator levers adifierentsetting for each fiight'ofthe shut? tle. Each vibrator lever'has rotatably mounted; thereon one ofthe vibrator gears andaeach of. the. latter hasa connector 17: wl'iichis at.- talched to the corresponding. harness japk 18.;

By means not shown the mutilated cylinder 11 andIEi-are, caused to rotate in opposite di -1' rections, the upper cylinder; 'c oacting with the vibrator: gears of the levers which I are raised". and the lower cylindersimilarly coacting" with the gears l3'corresponding to theNi-J: bratorf' levers'in lower position; j J; I. A guide comb -19Iis-fi xed toithe loom frame and serves to space the vibratorlevers as suggested in EigQZQ- j J i Each. vibrator; lever is: provided" witha locking tip QO-projectihg tothefri ghtxof the.

, comb as shownrin Fig.1.. "The lattelrl coacts l with a lock knife or blade2lawhich isinount; d 011' the horizonta suppor ing table ter ains part of the ,6 knite case sated. ge l y a 22am aving s preme-s1 arms 2 v which the. Present instanee may rotate freely a eute' xed shaftfifir lheatte may be iellr l d n. h I

T upper yl d s pr r d w h;

hit. 2 whishrr its emai s-" 2m cylinde and. heskeye th reto. alternatin cam 28 which eeperate wi h. a e Matt as;

leis-r29. carryingfo l. 0- est ie in 11w frontv elevation. 01% aportion i a IKHOWIB S. headjl aying 5-.

Fig. 3 thelatter has a low dwell 31 which need not necessarily be in engagement with the roll, and having a high dwell 32 which engages the roll at such times as 'the'lock portion'of'the lock knife frame'22. a

- '39 forming part of the lock'k-nife frame 22. The effect of the spring is to hold the frame. Iagaist the screwf36 andcause the latter to knife is to be moved .out of locking engagement with respect to the vibrator levers The lever 29 is pivoted as at 33 to the loom frame and has a depending arm 34 which carw ri es a stop screw 35. .Thelatter'is positioned for engagement with the comb or any other.. fixed part of the loom and may be so ad justed as to keep the roll just clear of the low dwell 31. Said 'depending'arni 34-13 provided with a secondscrevv orsimilar abutting element 36 which has engagement with h A relatively heavy tens onspring-37is in terposed between afixed stop 38 and'a finger move-"the arm 34 n) the left as viewed in Fig. 1 until the stop screw 35'engages the comb 19. In this way a single-spring .ten'ds' 'to move the lock knife bladetoward thetips and. also positions the lever29.

rotate and the cam 28 will depress lever 29'? Inoperation the cylinders 11 and will so as to cause rocking movement thereof aroundthe pivot 33 a counter clockwise direction aswviewed in.:Fig. 1. The effect of this movement istocause thescrew 36-.or

other similar abutting element carried bythe; i arm '34to push the frame 22 awayfromthe comb and the lock knife blade 21 away. .from

' the tips 20 so that the vibrator gears maybe raised or lowered under influence of the patt-ernmechanlsm. "This action takes place .while the'blank portions ofthe cylindersare passing thevibrator gears 13. The cam is so timed that the lock knife is drawnfinwardlybythe sprin gto'have holding engagement.

with the tips 20 just prior toengagementof the toothed portionsof. the cylinders with theivibratorl gears. By changing the position of screw 36 therangeiof'movement ofthe lock 7 knife may bevaried-and'by-changingthe position of screw 35' the position of the lever 29 .ma be altered" within limits.

r om the foregoing it will be -seen? havelpro'vided a simple connection between the" 'lockiknife operating cam 28* and.. the

blade 21 whic h consists essentially of two 7 parts one .ofwhichis actuated-by the cam 1 whichhas engagement with a portion ofthe and carries an abuttingsurfaceor element 36 100k knife frame.- The force tending to move and the lock knife frame against abutting surface when the cam is in such positionfas not to move these parts; M

Having thus described my invention it will be seen that changes and modifications may be made therein by thoseskilled in the art 7 without departing from-the spirit and scop'e ;of the invention and I do not wish to be lim; ,ited to the details Ihereindisclose'd, but what i i V l .7

Icl'aini'isf ,Q; 1. In a loomjhaving upper and lowerrotating actuator cylinderi' gears, vibrator levers movable to be operatively related to oneor the otherof said, gears at a time, a

lock knifeto engage the vibrator levers and limit movement ofthellatter, a cam rotating with the upper cylinder gear, .a lever en: gaging. an'drocked by the cam, a frame for... the lock'knife pivotally mounted on. the.

loom and having direct iengagement witha part of the lever, andseparate spaced pivotal supports for the frame andlevenwhich is rocked by the cam. a

-2. In a m having uppenand lower .ro-- tating actuator cylinder: gears, vibrator. le-: vers movable to be operativelyrelatedto one or .theother of said gearsat'a time,"a. lock knife to engage the vibrator leversr'and limit movement of thelatter, a camrotating with. one. of the cylinders, anactnating lever 'engaging v and movable] bythe cam, qanabut-.1

ting element carried bythe levernanda piw otally mountedifram'e for thelock knife ena in the. abuttin surface tomovefthey b D b b V knife away from the Lvibrator levers. g.

' 3. In a loomhaving upper and, lower ro 5 tating actuator. cylinder gears, vibratorj 1e movementof the latter, a cam rotating with one of thecylinders, two pivoted membersvers movable to be .operatively related to one f or the other of said, gears at a time, .a lock; f

knife. to engage .th'eIvibrator levers and-limit, i

one engaging the caniand the other sup porting the lock knife, said members having direct; engagement] with ,leach; other, and

spaced pivotal supports for the members,

Pivotal pport a j e t: each aictuator cylindenq; .4. In a.

tating actuator cylinder gears, .1. vibrator le-' vers movable to beoperativelyrelated to-one loom havinglnpper-and loweriro-g 'or'the. otherofi said gears at;:a time, a lock, "knife to engage'the" vibrator levers and limit movement of the latter, a cam rotating with one ofthe cylinders, two pivoted members, one engagmg the cam' and-theother supporting the lock knifefand transmitting the 'fgrceof'the camto thelo'ck knifebyiplacing the contactingpartsof the members-under compression strain, and spaced pivotal sup;

ports for the 'members; one pivotallsupport ad]acent each actuatorcylinder',

tating actuator cylinder gears, vibratorle 5. In a loomjhaving'upper and 'lower rjo vers movable to be operatively' related to one in or the other of said gears at a time, a lock knife to engage the vibrator levers and limit movement of the latter, a cam rotating with one of the cylinders, two pivoted members, one engaging the cam and the other supporting the lock knife, and an adjusting element carried by one member and engaging the other and having its axis substantially pararallel to the direction of transfer of force from the cam engaging member to the lock knife member.

6. In a loom having a pair of oppositely rotating actuating cylinder gears, a set of vibrator levers located between the gears and movable each to operative relation with respect to either gear, a fixed device, a lock knife member to engage the vibrator levers, resilient means to hold the knife in vibrator lever engaging position, a cam rotating with one cylinder gear, an actuating lever movable by the cam, and means establishing contact between the lockknife member and the actuating lever, the resilient means holding the actuating lever against the fixed device and maintaining the means in contacting relation.

7. In a loom having a pair of oppositely rotating actuating cylinder gears, a set of vibrator levers located between the gears and movable each to operative relation with respect to either gear, a fixed device, a lock knife member to engage the vibrator levers, a resilient element, an actuator lever and a cam to move the latter, the resilient element holding the lever and lock knife member in contact and also holding the lever against the fixed device.

8. In a loom having upper and lower rotating actuator cylinder gears, vibrator levers movable to be operatively related to one or the other of said gears at a time, a lock knife to engage the vibrator levers and limit movement of the latter, a cam rotating with one of the cylinders, two pivoted members, one engaging the cam and the other supporting the lock knife, a resilient element, and a fixed stop, the resilient element holding the members normally in contacting operative relation, and also holding one of said members against the fixed stop.

9. In a loom having upper and lower rotating actuator cylinder gears, vibrator levers movable to be operatively related to one or the other of said gears at a time, a lock knife to engage the vibrator levers and limit movement of the latter, a cam rotatin with one of the cylinders, two pivoted mem ers, one engaging the cam and the other supporting the lock knife, a resilient element, an a fixed stop, the resilient element holding the members normally in contacting operative relation, and also holding the cam engaging member against the fixed stop.

10. In a loom having upper and lower actuator cylinders and a set of vibrator levers 

